Two Royal Navy officers are to face a court martial after Devonport-based nuclear submarine HMS Trafalgar struck rocks off the coast of Scotland.
HMS Trafalgar was commissioned in 1983
HMS Trafalgar was taking part in training exercises off Skye on 7 November, 2002, when the accident happened.
The vessel is still being repaired at Devonport Dockyard after suffering millions of pounds of damage.
The Ministry of Defence has confirmed that, at the time of the accident, an American trainee was in control of the vessel.
Submarine courses for foreign service personnel are common and culminate in a four-week evaluation at sea.
A Board of Inquiry has been held and an MoD spokeswoman said it had found there were "some lapses" from the usual high standards set by the Royal Navy.
The MoD has confirmed two Royal Navy officers will now face a court martial over the incident.
No date has yet been set for the hearing.